Segfault on not setting a delegate for a ListView with networked source

#0  0xb75806e9 in FxListItemSG::setPosition(double) () from /home/dajansen/depot/qt/qt5/qtbase/lib/libQtDeclarative.so.5
#1  0xb757ed19 in QSGListView::itemsInserted (this=0xafa00b20, modelIndex=0, count=20) at items/qsglistview.cpp:1657
#2  0xb764ca7f in QSGListView::qt_static_metacall (_o=0xafa00b20, _c=QMetaObject::InvokeMetaMethod, _id=10, _a=0xbfffe754)
    at .moc/debug-shared/moc_qsglistview_p.cpp:272
#3  0xb55218e4 in QMetaObject::activate (sender=0xafa05828, m=0xb7d0abc4, local_signal_index=1, argv=0xbfffe754) at kernel/qobject.cpp:3376
#4  0xb764d7d3 in QSGVisualModel::itemsInserted (this=0xafa05828, _t1=0, _t2=20) at .moc/debug-shared/moc_qsgvisualitemmodel_p.cpp:153
#5  0xb7587cfa in QSGVisualDataModel::_q_itemsInserted (this=0xafa05828, index=0, count=20) at items/qsgvisualitemmodel.cpp:1108
#6  0xb764ddb0 in QSGVisualDataModel::qt_static_metacall (_o=0xafa05828, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfffe914)
    at .moc/debug-shared/moc_qsgvisualitemmodel_p.cpp:397
#7  0xb55218e4 in QMetaObject::activate (sender=0x821f7d0, m=0xb7d07a5c, local_signal_index=0, argv=0xbfffe914) at kernel/qobject.cpp:3376
#8  0xb7637a7f in QListModelInterface::itemsInserted (this=0x821f7d0, _t1=0, _t2=20) at .moc/debug-shared/moc_qlistmodelinterface_p.cpp:107
#9  0xb735862a in QDeclarativeXmlListModel::queryCompleted (this=0x821f7d0, result=...) at util/qdeclarativexmllistmodel.cpp:1035
#10 0xb7637dd0 in QDeclarativeXmlListModel::qt_static_metacall (_o=0x821f7d0, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xafa0c200)
    at .moc/debug-shared/moc_qdeclarativexmllistmodel_p.cpp:126
#11 0xb551b61e in QMetaCallEvent::placeMetaCall (this=0xafa093a8, object=0x821f7d0) at kernel/qobject.cpp:541
#12 0xb551cfcb in QObject::event (this=0x821f7d0, e=0xafa093a8) at kernel/qobject.cpp:1122
#13 0xb58680d6 in QApplicationPrivate::notify_helper (this=0x80a1778, receiver=0x821f7d0, e=0xafa093a8) at kernel/qapplication.cpp:4497
#14 0xb5865995 in QApplication::notify (this=0xbffff300, receiver=0x821f7d0, e=0xafa093a8) at kernel/qapplication.cpp:3879
#15 0xb5504278 in QCoreApplication::notifyInternal (this=0xbffff300, receiver=0x821f7d0, event=0xafa093a8) at kernel/qcoreapplication.cpp:839
#16 0xb7ea205f in QCoreApplication::sendEvent (receiver=0x821f7d0, event=0xafa093a8)
    at ../../../qtbase/include/QtCore/../../src/corelib/kernel/qcoreapplication.h:212
#17 0xb550537a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x80a0cd8) at kernel/qcoreapplication.cpp:1481
#18 0xb5504e49 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1351
#19 0xb5932df0 in QCoreApplication::sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:217
#20 0xb553ed02 in postEventSourceDispatch (s=0x80a7378) at kernel/qeventdispatcher_glib.cpp:279
#21 0xb4d1e5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#22 0xb4d222d8 in ?? () from /lib/libglib-2.0.so.0
#23 0xb4d224b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#24 0xb553fd7a in QEventDispatcherGlib::processEvents (this=0x80a5178, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#25 0xb593f44a in QGuiEventDispatcherGlib::processEvents (this=0x80a5178, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#26 0xb55011b3 in QEventLoop::processEvents (this=0xbffff25c, flags=...) at kernel/qeventloop.cpp:149
#27 0xb5501419 in QEventLoop::exec (this=0xbffff25c, flags=...) at kernel/qeventloop.cpp:225
#28 0xb55048e9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1106
#29 0xb586564e in QApplication::exec () at kernel/qapplication.cpp:3758
#30 0x0805037d in main (argc=2, argv=0xbffff514) at main.cpp:568